Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

chrome/browser/prefs/scoped_user_pref_update_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/prefs/mock_pref_change_callback.h"
 #include "base/prefs/public/pref_change_registrar.h"
-#include "chrome/browser/prefs/mock_pref_change_callback.h"
 #include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/test/base/testing_pref_service.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::_;
 using testing::Mock;
 
 class ScopedUserPrefUpdateTest : public testing::Test {
@@ skipping 57 matching lines @@
 TEST_F(ScopedUserPrefUpdateTest, NeverTouchAnything) {
   const DictionaryValue* old_value = prefs_.GetDictionary(kPref);
   EXPECT_CALL(observer_, OnPreferenceChanged(_)).Times(0);
   {
     DictionaryPrefUpdate update(&prefs_, kPref);
   }
   const DictionaryValue* new_value = prefs_.GetDictionary(kPref);
   EXPECT_EQ(old_value, new_value);
   Mock::VerifyAndClearExpectations(&observer_);
 }